Conference: A Quarter Century of Peridynamics (PD25); Tucson, Arizona; 22-25 April 2024

该奖项为来自美国机构的25名学生、博士后研究员和职业生涯早期教师提供差旅支持，以参加将于2024年4月22日至25日在亚利桑那州图森市举行的美国计算力学协会(USACM)专题会议“周期动力学的四分之一世纪”(PD25)。会议的主要目标是扩大对周期动力学(PD)建模和模拟的了解，使更多的受众受益于这种方法为科学、工程和技术中以前无法解决的复杂问题提供的优势。研究生、博士后和来自行业、国家实验室和国家机构的参与者将通过参加会议和相关的短期课程进行培训。这次会议为早期职业研究人员提供了一个理想的机会，他们专门从事材料退化和失效的建模和模拟，以及减少材料退化和失效的方法(当寻求防止损坏时)或增强它(在采矿、材料回收等方面需要)。会议组织者寻求扩大代表不足群体的成员和本科生的参与，他们渴望了解更多关于PD建模的知识。这些努力将增加致力于材料失效和破坏的建模和模拟的美国研究人员的管道。周期动力学(PD)作为材料断裂和失效的模型于2000年引入，最近经历了爆炸性增长，致力于PD相关主题的出版物和研究小组的数量。PD现在涉及到骨折以外的广泛研究领域，包括腐蚀损伤、肿瘤生长、电迁移的建模、模拟药片粉末的粉碎以及石墨烯层的建模。局部放电建模和仿真的主要焦点是机械、民用和航空航天系统的可靠性和安全性，直接影响到这些系统的降低成本和提高性能。这些影响直接影响到健康、生活质量和国土安全。会议计划包括三个平行进行的短期课程，内容是基于钯的计算软件的不同方面，用于预测各种材料的断裂和损伤，包括玻璃和陶瓷、金属和纤维增强复合材料。这些课程由PD建模和仿真方面的领导者提供，旨在为参与者提供各种环境中PD求解器的实践经验，包括运行大规模并行计算，或与商业软件如Ansys和ABAQUS结合。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

This award provides travel support for 25 students, postdoctoral fellows, and early-career faculty from US institutions to attend the US Association for Computational Mechanics (USACM) Special Topic Conference “Quarter Century of Peridynamics” (PD25), which will be held 22-25 April 2024 in Tucson, Arizona. The main objective of the conference is to broaden the exposure of peridynamics (PD) modeling and simulation to a larger audience that may benefit from the advantages this approach provides to complex, previously unsolvable problems in science, engineering, and technology. Graduate students, post-docs, and participants from industry, national labs, and national agencies will be trained through their participation in the conference and associated short courses. The conference presents an ideal opportunity for networking to early career researchers specializing in modeling and simulation of material degradation and failure, and ways to reduce it (when protecting against damage is sought) or enhance it (as is needed in mining, recycling of materials, etc.). The conference organizers have sought to broaden participation from members of underrepresented groups and undergraduate students who aspire to learn more about PD modeling. These efforts will grow the pipeline of US researchers working on modeling and simulation of material failure and damage.Peridynamics (PD) was introduced in 2000 as a model of fracture and failure in materials and has recently experienced explosive growth in terms of the number of publications and research groups working on PD-related topics. PD is now reaching a broad range of research areas beyond fracture, including modeling of corrosion damage, growth of tumors, electromigration, simulating crushing of powders for medical tablets, and modeling of graphene layers. The major focus of PD modeling and simulation is reliability and safety of mechanical, civil, and aerospace systems, with a direct impact on reducing costs and improving performance of such systems. These effects have a direct impact on health, quality of life, and homeland security. The conference program includes three short courses, running in parallel, on different aspects of PD-based computational software applied to predicting fracture and damage in a variety of materials, including glass and ceramics, metals, and fiber-reinforced composites. These courses, presented by leaders on PD modeling and simulation, aim to provide participants with hands-on experience with PD solvers in a variety of settings, including running massively parallel computations, or coupling with commercial software like ANSYS and Abaqus.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.